Improving electroactivity of N-doped graphene derivatives with electrical induction heating

Nosan, Miha (avtor), Pavko, Luka (avtor), Finšgar, Matjaž (avtor), Kolar, Mitja (avtor), Genorio, Boštjan (avtor)

Graphene derivatives doped with nitrogen have already been identified as active non-noble metal materials for oxygen reduction reaction (ORR) in PEM and alkaline fuel cells. However, an efficient and scalable method to prepare active, stable, and high-surface-area non-noble metal catalysts remains a challenge. Therefore, an efficient, potentially scalable strategy to improve the specific surface area of N-doped graphene derivatives needs to be developed. Here, we report a novel, rapid, and scalable electrical induction heating method for the preparation of N-doped heat-treated graphene oxide derivatives (N-htGOD) with a high specific surface area. The application of the induction heating method has been shown to shorten the reaction time and improve the energy efficiency of the process. The materials synthesized by induction heating exhibited very high specific surface area and showed improved ORR activity compared to the conventional synthesis method. Moreover, we demonstrated that the temperature program of induction heating could fine-tune the concentration of nitrogen functionalities. In particular, the graphitic-N configuration increases with increasing final temperature, in parallel with the increasing ORR activity. The presented results will contribute to the understanding and development of nonmetal N-htGOD for energy storage and conversion applications.

• Jezik: Angleški jezik
• Ključne besede: N-doped graphene nanoribbons, high specific surface area, induction heating, electrocatalysis, oxygen reduction reaction, N-doped graphene, electrolytes, materials, reaction products, redox reactions, two dimensional materials
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FKKT - Fakulteta za kemijo in kemijsko tehnologijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2022
• Št. strani: Str. 9571-9580
• Številčenje: Vol. 5, iss. 8
• PID: 20.500.12556/RUL-138938
• UDK: 620.3
• ISSN pri članku: 2574-0962
• DOI: 10.1021/acsaem.2c01184
• COBISS.SI-ID: 119171587
• Datum objave v RUL: 26.08.2022

Gradivo je del revije

• Naslov: ACS applied energy materials
• Skrajšan naslov: ACS app. energy mater.
• Založnik: American Chemical Society
• ISSN: 2574-0962
• COBISS.SI-ID: 39550725

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: z dušikom dopirani nanotrakovi, z dušikom dopiran grafen, visoka specifična površina, elektrokataliza, reakcija redukcije kisika